| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Kostjaki | city | Altayskiy Kray | Russia | 53.56 | 83.74 | 830 | 6681 |
| Kostjakovka | city | Omskaya Oblast' | Russia | 54.71 | 75.08 | 360 | 447 |
| Kostjanoj Nos | city | Nenetskiy Avtonomnyy Okrug | Russia | 68.32 | 53.65 | 0 | 0 |
| Kostjantynivka | city | Donets'ka Oblast' | Ukraine | 48.53 | 37.71 | 252 | 89868 |
| Kostjantyniwka | city | Donets'ka Oblast' | Ukraine | 48.53 | 37.71 | 252 | 89868 |
| Kostjerovo | city | Republika Srpska | Bosnia & Herzegovina | 44.29 | 19.14 | 830 | 4447 |
| Kostjube | city | Astrakhanskaya Oblast' | Russia | 46.43 | 48.43 | -1689 | 474 |
| Kostjubowka | city | Gomel'skaya Oblast' | Belarus | 52.54 | 30.92 | 830 | 9400 |
| Kostjugovka | city | Karsavas Novads | Latvia | 56.82 | 27.94 | 305 | 643 |
| Kostjukovka | city | Amurskaya Oblast' | Russia | 51.32 | 127.68 | 830 | 0 |
| Kostjuninskaja | city | Vologodskaya Oblast' | Russia | 60.37 | 40.90 | 830 | 298 |
| Kostjurko | city | Komi | Russia | 66.83 | 56.87 | 301 | 0 |
| Kostjusjino | city | Yaroslavskaya Oblast' | Russia | 57.96 | 40.01 | 416 | 978 |
| Kostjusjino | city | Tverskaya Oblast' | Russia | 57.88 | 36.33 | 396 | 149 |